In a large enterprise, the number of switches is large, and a large amount of VLAN information needs to be configured and maintained.

If you only rely on the network administrator to operate, the workload is very large, and the consistency of the configuration cannot be guaranteed.

In order to solve the above problem, centralized management of VLANs and dynamic negotiation of interface

modes can be implemented through VLAN centralized management protocol VCMP and link negotiation protocol

LNP to realize automatic management.

VCMP is a Layer 2 protocol and is a Huawei proprietary protocol.

After VCMP is deployed on the switch in the Layer 2 network:

Centralized management and maintenance of VLANs can be implemented, reducing network maintenance costs.

Plug and play access switches can be implemented.

There are two important concepts in the VCMP protocol:

VCMP management domain

A VCMP management domain is a set of switches with the same domain name and connected to each other through a 

trunk or hybrid interface. Each switch in the same domain must use the same domain name. A switch can be added 

to only one VCMP management domain. 

The switches in different domains cannot synchronize VLAN information.

The VCMP management domain determines the scope of the VCMP management device. 

Any switch that joins the domain is managed by the management device in the domain. 

There can be only one management device in the domain, but there can be multiple managed devices.

Device VCMP role

VCMP determines the attributes of a device through roles.